Fluid delivery assembly



Jan. 26, 1965 c. A. FLARsHElM FLUID DELIVERY ASSEMBLY 2 Sheets-Sheet 1 Filed DeG. lO, 1962 www u Jan. 26, 1965 c. A. FLARSHEIM FLUID DELIVERY ASSEMBLY 2 Sheets-Sheet 2 Filed Dec. lO, 1962 INVENTOR. Va/'ence A, F/a/:s/ze//W United States Patent Office 3,167,080 Patented Jan. 26, 1965 3,167,080 FLUID DELIVERY ASSEMBLY Clarence A. Flarsheirn, 613i Mission Drive, Shawnee Mission, Kans. Filed Dec. 10, 1962, Ser.. No. 243,233 14 Ciairns. (Cl. 134-144) `This invention relates to liuid delivery means, and more particularly, to structure for delivering cleaning and treating fluids under pressure toward and against a revolving member in the nature of a foraminous air filter.

The present application is a continuation-inpart of my lcopending application entitled Filter Washing Machine and Method, Serial No. 96,892, filed March 20, 1961.

lIn my copending application, lfluid delivery means in the nature of rotating swirlers was utilized for directing high pressure streams of a cleaning solution and an adhesive, such as oil, against a number of revolving objects such as `foraminous air filters .for successively cleaning and treating such filters. Although the swirlers utilized in the aforesaid machine have proven to be satisfactory in many respects for cleaning and treating such objects, it has been found that, by using the concepts of the present invention, air filters are more effectively cleaned and treated 'by virtue of the fact that the fluids directed against the filters more nearly contact substantially the entire areas exposed to the fluid streams.

The present invention, therefore, comprises a fluid delivery assembly which represents an improvement over the swirlers described in my copending application. This is accomplished by providing a number of reciprocating tubes having diuid delivery orices for directing high pressure streams of cleaning and treating fiuids over substantially the entire `areas of the filters exposed to the fluid streams las the tubes reciprocate so that the :fluids may penetrate substantially :the entire mass of the filters as the latter are caused to revolve about the tubes.

It is, therefore, the primary object of the present invention to provide an improved fluid-delivery assembly which includes a number of reciprocating, fluid delivery tubes having orifices therein disposed for delivering streams of cleaning and treating fluids under pressure to a number of members revolving about the tubes, whereby the members are more effectively cleaned and treated than was heretofore possible by virtue of the fact that the iiuids issuing from the orifices are capable of sweeping substantially the entire exposed area of each of the revolving members as the tubes reciprocate and as the members revolve about the tubes.

A further important object of the present invention is the provision of structure which permitsthe tubes -to be mounted in positions to direct the iiuid toward the members along lines which are substantially perpendicular to exposed yfaces thereof as the members revolve about a vertical axis and while the tubesreciprocate along paths of travel parallel to the axis of rotation of the members, whereby the pressure of the uid and the effects of centrifugal force are more effectively utilized in the cleaning of the members.

Still another object of ,the present invention is the provision of structure which is operably coupled ywith the aforesaid tubes and which is adapted to be operably coupled lwith the apparatus for revolving the members, whereby the tubes'may be reciprocated in response to the rotation of the members to thereby preclude the presence of an additional or external power source for effecting the reciprocation of the tubes.

A further object ofthe present invention is the provision of a fluid-delivery assembly including the aforesaid tubes which may be utilized with conventional bearing means having a stationary inner race and an outer race coupled with the apparatus for revolving `the members so that the tubes may be supported by the inner race for reciprocation Within the `region circumscribed by the members without interference from nearby structure and may be operably coupled with the outer race 4in a manner to cause the reciprocation of the tubes, thus obviating additional support structure and power-actuation means for the assem bly itself.

Yet another object of the present invention is the provision of a iiuid-delivery assembly of the character described =which includes structure for mounting the tubes adjacent the axis of revolution of the members with the orifices of the tubes disposed for directing fluids across the circular `path of travel of the members so that the fluids contact substantially the entire exposed areas of the members as the latter revolve about the axis of revolution, and as the tubes reciprocate.

Although the preferred embodiment of the present invention is illustrated and described in connection with the filter washing machine which is the subject of my copending application, it is to be emphasized that the present invention need not be restricted to such use, but maybe employed in other and similar devices which require 'the delivery of fluids under pressure to areas or regions surrounding or adjacent the iiuid delivery means. For instance, the present invention may be utilized for spraying paint, aerosols, vapors or gases Within confined areas for coating exposed `surfaces of adjacent structural members,

Y OfFIG. 1;

IFIG. 5 is a cross-sectional view of a machine utilizing the fluid-delivery assembly of the present invent-ion on a reduced :scale for the purpose of cleaning and treating a pair of rotating members in `the nature of foraminous air filters;

yFIG. 6 is a cross-sectional, fragmentary View of a porftion of the fluid-delivery assembly 4illustrating gear means for actuating the reciprocating linkage of the assembly lfor reciprocating the liuid delivery tubes;

FIG. 7 is a cross-sectional View taken along line 7-7 of FIG. 3;

lFIG. 8 is a cross-sectional view taken along line 8-8 of PIG. 1; and

FIG. 9 is a schematic, top plan view of fluid delivery rtubes forming a part of the instant invention illustrating the successive positions of a member to be cleaned and treated as the member revolves about the tubes.

The fluid-delivery assembly of the present invention includes a pair of elongated tubes plugged at the ends thereof and having a number of spaced orifices therein,

along the lengths thereof. A support in the nature of a pair of elongated, flat plates is adapted to be secured to stationary support structure within an enclosure capable of being revolved, the enclosure being disposed for re ceiving and supporting a number of members to be cleaned and treated. The tubes are slidably mounted uprightly on the plates for vertical reciprocation relative thereto. Reciprocating means in the nature of an elongated, shiftable linkage is carried by the plates and connected to the tubes through a pair of elongated elements slidable along opposed longitudinal edges of the plates.

Gear means is connected to the linkage, supported between the plates, and adapted to be operably coupled lationship thereto.

The fluid-delivery assembly 10 in its preferred form, is utilized with a machine l2 for cleaning and treating a pair of foraminous members lll in the nature of air filters or the like, as illustrated in FIG. 5. Members ld are shown in dashed lines in positions on diametrically opposed sides of assembly 10 and within a cylindrical drum 16, the latter being in turn revolvably mounted within a stationary housing 18 by virtue of upper and lower bearing units 2t) and 22 respectively. Power-actuated means 2li imparts rotation to bearing unit 22 to thereby revolve drum 16 about a vertical axis through the axis of revolution of drum 16. The revolution of drum 16' causes members 14 -to revolve in a circular path about assembly l.

Assembly lil includes a support Z6 comprising a pair of elongated, flat plates 2S and 30 as is clear in FIGS. l, 2, 3, 4 and 8. A flange 3l, as shown in FlGS. 4 and 8, is integral with each of said plates 23 and @il and extends laterally therefrom along a corresponding longitudinal edge thereof. Flanges 31 add rigidity to plates 28 and 3f). Plates 28 and 30 are spaced apart, are substantially parallel, and substantially span the distance between the top 25 and bottom 27 of drum i6. A pair of blocks 32 and 34 are disposed between plates 2S and 30 at one end of support 2,6 and fastening means 36 in the nature of machine screws interconnect blocks 32 and 34 with plates 28 and 30 to maintain the latter in parallel, spaced relationship throughout the lengths thereof. A circular plate 38 is secured by screws 4() to block 32 in the manner illustrated in FIG. 6. Y

Plates 28 and 30 are each provided with an elongated slot 42 therein at the end thereof opposite to the end in contact with blocks 32 and 34. Slots f2 extend inwardly to locations substantially midway between the ends of plates 28 and 30.

A pair of channel elements 44 and 46 contact plates 28 and 30 at opposed, longitudinal edges thereof as illustrated in FIGS. 1, 2 and 8. Each element 44 or 46 has opposed flanges which embrace the plates 28 and 3ft in the manner shown in FIG. 8 while permitting the corresponding element lto reciprocate relative to said plates. A continuous band 48 interconnects elements 44 and 46 intermediate the ends thereof as is clear in FIGS. l and 4. Notches are cut in elements te and i6 to accommodate band d8, it being clear that means is provided for rigidly securing band 43 to portions of elements 44 and 46 contacted by band 4%. Elements ill and 46 therefore, move in the direction of movement of band 48.

Y A block 49 is secured between plates 28 and 3@ at the normally lower ends thereof by machine screws 5l, and is provided with a bore thereof for receiving a bushing 53, as is clear in FIG. l. Bushing 53 is preferably pressfitted within the bore of block t9 and is provided with an annular shoulder 5S thereon which abuts the lower face of block V49. Bushing 53 rotatably receives a pin 57 rigid to the bottom 27 of drum I6 so that plates and 30 are stabilized when drum 116 rotates about assembly liti.

Means for reciprocating band i3 comprises anelongated linkage 5@ pivotal-ly secured at one end thereof Yto band t8 by a machine screw S2 or the like. Linkage Si? is secured to band 4S substantially midway between ele-V ments 44 and 46 as is clear in FIG. l, and screw 52 passes throughslots 4,2 in plates 23 and 35i. A nut 5ft main- Y tains screw 52 in a fixed position with respect to band The opposite end of linkage 5t) is pivotaily secured by means of a pin 56 to the voutermost end of an arm 55 secured to a shaft etljournalled in plates Z3 and 3f). ShaftV 60 Yspans the distance between plates 2S and 3ft and is located intermediate block 34 and slots 42. Rotation of shaft 6u results in the rotation of arm 5S and, by virtue of the pivotal interconnections of linkage Si) with arrn 5S, and the pivotal connection between band @ifi and linkage Eil, band 43 reciprocates with respect to plates 28 and d@ as shaft 60 rotates. Reciprocation of band i8 results in the reciprocation of eiernents it and t6 with respect to plates 28 and 3h.

A worm gear 62 is mounted on shaft e@ for rotation therewith. Gear 62 is located between plates ZS and Sil positioned in a manner to permit meshing with a worm 64 carried on shaft 66 journalled in biock 3ft' by bearings 68 as is clear in FIG. 6. Shaft 66 extends outwardly from block 34 and plates 2S and 3@ to mount a spur gear 7d on shaft 66.

A bore 72 is provided in biock 34 to accommodate worm 64, shaft 66 and bearings 68. A spur gear 74 is journalled by means of a bearing 76 in block 32 at one end of the latter and meshes with gear 7@ in the manner illustrated in FIG. 6. Gear '74 is positioned to mesh with a crown gear 78 which is affixed rigidly in any suitable rnanner to one end of the outer race 8@ of bearing unit 2f?. The inner race S2 of of bearing unit Zit) is illustrated in FIG. 6 within outer race 8@ and is provided with an enlarged bore 84 therethrough. A cylindrical block S6 having an annular flange Sil thereon intermediate the ends thereof, is disposed within bore Se with flange 3S thereof in Contact with the end of inner race 32 opposite to the end .adjacent crown gear 73. The opposite end of inner race S2 normally contacts the outer surface of plate 38 as is clear in FIG..6. Y

Each element t4 and 46 is provided Vwith a pair of laterally projecting ears @il and 92 thereon as is clear in FIGS. l; 2, 4 and 8. Ears 9th and 92 of element 44 are coupled with an elongated tube gli having a number of spaced orificese therein along the length thereof. Ears 9) and 92 of element 46 mount an elongated tube 9% having orifices lltltl therein in spaced relationship along the length thereof. Tubes 94 and 95 are provided with enlargements 102 yand MM respectively, as is clear in FIG. 1. Enlargements 102 and 104i are each provided with an extension 19:3 which normally overlies a correspon-ding ear @il and is removably secured thereto by a key lll'. Ears 92 substantial-ly surround tubes @if and-98 in the manner illustrated in FiG. 8 so that tubes 94 and 93'at all times move with elements l and 46 respectively.

Tubes 94 and 98 are plugged at the ends and are provided with openings in fluid communication with the joints IM in the manner shown in FIGS. l and 2. Elbows tl interconnect joints 166 with a pair of flexible pipes Il@ and M2 respectively, pipes lll@ and 112 being in the nature of rubber hoses. Pipes Il@ and lllZ are coupled at the opposite ends thereof with adaptors lili and M6 respectively connected to the face of plate 38 opposite to the face thereof contacted by race'Z.

It is to be noted that pla-te 38 is providedwith a pair of threaded openings therein in the manner illustrated in FIG. 7 for receiving a pair of tubes M8 and l2@ respectively, shown in dashed lines in FIG. 2. Block 56 is also provided with a pair of openings alignable with the openings in plate 38 to accommodate tubes liti and IZQ Tubes M8 and l2@ project through plate 38, and adaptors M4 and M6 are threadably coupled withtubes ils and l2@ in the manner illustrated in FIG. 7. Adaptors 114' and M6, while interconnecting pipes il@ and lf2 with tubes litio and liti, also space tubes Il@ and il?. outwardly from plates 28 andh to prevent interference with the movement of linkage 5@ and arm 53.

As shown in FlG. 9, tubes 94 and 98 are preferably positioned at equal distances from the axis of revolution tZl of members lli on diametrically opposed sides of said axis. The directions of fluid issuing from tubes 9V; and 93 are denoted Vby arrows 123 and 1725, and it is evident that fiuids are directed outwardly from each of tubes Slt and 98 along a tangent to the circle whose radius is equal to the radial distance between an orifice of one of the tubes and axis of revolution 121.

For purposes of illustration only, a single member 14 is shown in solid and dashed positions in FIG. 9, the solid line position denoting the location of the member 14 prior to moving into 'the path of travel of fluid issuing from tube 94 and the dashed line positions indicating the locations of member 14 as the latter revolves about axis 121.

As member 14 moves into the location denoted by the numeral 125, member 14 moves into the fluid issuing from tube 94 and the line along which the fluid is directed forms an acute angle with the exposed face of member 14. As member 14 moves into the location denoted by fthe numeral 127, the angle approaches 90. As member 14 moves into the location denoted by the numeral 129, the angle again decreases and member 14 moves away from the fluid issuing from tube 94.

The pressure of the fluid from each of said tubes 94 and 98 is suiiicient to direct the tluid through members 14 regardless of the angle between the direction of flow of the fluid and the exposed face of a member 14, so `that members 14 are effectively and successively cleaned and treated by the liuids issuing from tubes 94 and 98 respectively.

Assembly is operatively positioned so that plates 28 and 30 are in depending relationship to bearing unit 20 in the manner shown in FIG. 5. An'elongated, tianged element 122, rigid to housing 18 in any suitable manner so that inner race 82 of bearing unit 20 is stationary with respect to drum 16, supports assembly 1t) with tubes 94 and 98 Within drum 16. As shown in FIG. 5, the interconnecting action of tubes 118 and 120 interconnects plate 38 and thereby plates 28 and 30 to block 86, which in turn is received within an opening 124 in element 122 and connected thereto by means of fastening means 126. Plates 28 and 30 are, therefore, stationary at all times during the operation of machine 12.

Outer race 80 is connected to drum 16 by interconnecting a pair of opposed flanges y128, FiG. 2, on outer race 80 to iianges 130 serving as portions of the top 25 of `drum 16 as shown in FIG. 5. Tubes 118 and 120 are each provided with an elbow 134 which may be operably coupled to a source of fluid, it being clear that tube 94 is utilized for directing cleaning iiuid toward and against members 14, while tube 98 is utilized for directing a treating fluid, such as an adhesive with an oil base, toward and against mem-bers 14.

It is to be noted that the fluids may be delivered successively to tubes 94 and 98 according to a predetermined timed sequence so that members may be successively cleaned and treated.

In operation, members 14 are disposed within drum 16 as shown in FIG. 5, and, when power-actuated means 24 is energized, drum 16 is caused to revolve with respect to housing 18, while outer race 80 is caused to rotate with respect to inner race 82. Rotation of outer race 80 results in the rotation of crown gear 78, spur gears 7@ and 74, worm 64, Worm gear 62, and arm 58. Rotation of arm 58 results in the vertical reciprocation of linkage 50, band 48 and elements 44 and 46; Tubes 94 and 98 reciprocate with elements 44 and 46 so that fluid issuing from the oriiices of each of tubes 94 and 98, are directed against predetermined and coextensiveportions of members 14 as the latter revolve about an axis through bearing units and 22. The movements of tubes 94 and 98 are essentially parallel with the axis of rotation of drum 16, and the orifices 96 and 180 direct the corresponding fluids across the circular path of travel of members 14 as is clear in FIG. 9, so that members 14 move into the high pressure stream of fluids and are subsequently contacted thereby. In view of the'large number of revolutions of members 14 in a given unit of time, the fluids issuing from orifices 96 and 180 substantially Contact the entire exposed portions of members 14 to thereby assure a complete coverage of members 14 suiiicient to effectively clean and treat the same.

The flexibility of pipes 118 and 112 permits tubes 94 and 98 to reciprocate uninterruptedly along paths parallel to the axis of revolution of drum 16.

The relative sizes of gears 70, 74 and 78 are selected so as to assure that a random coverage of members 14 by the fluids is attained during the operation of machine 12. Thus, an exact synchronization of the speeds of revolution of members 14 and the rates of vertical movement of tubes 94 and 98 is prevented to thereby preclude the occurrence of the situation wherein only certain portions of members 14 are covered by the uids.

Having thus described the invention, what is claimed as new and desired to be secured by Letters Patent is:

l. Apparatus for delivering iin-id toward and against a member revolvable about a central axis spaced therefrom, said apparatus comprising:

an elongated support adapted to` be disposed adjacent said central axis and Within the region circumscribed by said member;

a tube adapted to be `operably coupled with `a source of iluid under pressure and having a number of spaced or-ices therein along the length thereof providing fluid outlets therefor;

an element carried by said support for reciprocating movement along the length thereof and secured to said tube for mounting the latter on said support for reciprocating movement substantially longitudinally of said central axis whereby fluid issuing from said orices will be directed across the path of revolution of said member and against coextensive portions of the member as the latter moves into alignment -with the orilices; and

means coupled With said element for reciprocating the latter to thereby reciprocate said tube.

2. In a machine for treating a member revolvably mounted for movement about a central axis on supporting structure having a stationary part and a rotatable part, the improvement of which comprises means adapted to be disposed adjacent the central axis and Within the region circumscribed by said revolving member for delivering a treating iiuid toward and against said member to treat the latter, said means including:

a support including a plate adapted to be secured to said stationary part and to extend outwardly therefrom into said region adjacent the central axis;

a tube adapted to be operably coupled with a source of said fluid under pressure and having a number of spaced orices therein along the length thereof providing fluid outlets therefor;

an elongated element slidably secured to the plate and having linkage means thereon, said tube being mounted on said element for movement therewith and thereby for reciprocating movement substantially parallel to said axis to permit iiuid issuing from the orifices. to be directed across the path of revolution of said member and to thereby be directed against coextensive, longitudinally extending portions of the member as the same move into alignment with the orifices; and

means coupled withsaid linkage and adapted to be operably coupled with said rotating part for actuating said element to thereby reciprocate said tube in response to the revolution of said member.

3. In a machine as set forth in claim 2, wherein said element engages one longitudinal edge of said plate and is provided with a pair of ears thereon extending laterally thereon, said tube being secured to said ears in spaced relationship to said plate.

4. In a machine as set forth in claim 2, wherein is included a iiexible pipe secured to said tube intermediate the ends of the latter and in iiuid communication therewith, said pipe adapted to extend through said stationary part and to be operably coupled with said source of iiuid.

, linkage being pivotally mounted at said one end theleo' 5. in a machine as set forth in claim 2, wherein said support comprises an elongated plate, said actuating means includes a first gear adapted to be secured to said rotating part, a second gear mounted on said plate and coupled with said reciprocating means, and a third gear carried by the plate and interconnecting said first and second gears.

6. In a machine as set forth in claim 5, wherein is included ashaft rotatably mounted on said plate, said second gear comprises a worm gear mounted on said shaft for rotation therewith, said third gear including a worin operably coupled with said worm gear.

7. In a machine as set forth in claim 6, said reciproeating means including an elongated linkage, said tube being operably coupled with said linkage, and including an arm coupled at one end thereof with said shaft and extending outwardly therefrom, said linkage being pivotally secured to the opposite end thereof to said arm, whereby said linkage and thereby said tube is recipro- .cated as said arm is rotated under the influence of said worm gear.

8. ln a machine for cleaning and treating an elongated member revolvably mounted uprightly for movement about a vertical axis on supporting structure having bearing means thereon including a stationary inner race and a rotatable outer race, the improvement of which com* prises means adapted to be disposed adjacent said axis and within the region circumscribed by said revolving member for successively delivering cleaning and treating fluids toward and against said member to thereby clean and treat the latter, said means including:

a pair of elongated, spaced, generally parallel plates each adapted to be secured at one end thereof to said inner race and to extend outwardly therefrom into said region;

a pair of tubes each having a number of spaced orifices therein along the length thereof providing huid outlets therefor;

a flexible pipe for each 4tube respectively and connected thereto in fluid communication therewith, said pipes being adapted for extending through said inner race and adapted to be operably coupled with sources of cleaning and treating iluids respectively;

an elongated tube-supporting element for each tube respectively, said elements being slidably mounted on said plates adjacent corresponding and opposed longitudinal edges thereof;

an elongated 'linkage coupled at one end thereof with said elements; v

a viirst shaft rotatably carried by said plates;

an arm secured at one end thereof with said first shaft Y ror rotation therewith, said linkage being secured at the opposite end thereof to the outer end of said arm;

a worm gear carried by said first shaft between said plates for rotation with said nrst shaft;

econd shaft rotatably mounted on said plates;

a worm carried by said second shaft and being ,operably coupled with said worm gear;

a spur gear mounted on said second shaft in spaced relationship to said worm; and

a crown gear adapted to be secured to said outer race for rotation therewith, said spur gear being operably coupled with said crown gear for rotating said worm gearto thereby reciprocate said tubes responsive to the revolution of said member. 9. in a machine as set forth in claim 8, wherein is included an elongated, element coupling member, sait on said coupling member intermediate the ends of the latter.

, Y 10. In a machine as set forth in claim 8, wherein said tubes are adapted to be disposed equidistantly from and on diametrically opposed sides of said vertical axis Vwith the direction of fluids issuing from the orices thereof lbeing tangent to the circle having a diameter equal to the distance between said tubes.

11. ln combination: support structure; a drum adapted to receive a number of members to be cleaned and provided with an opening therein;

means coupled with said structure and said drum Yfor mounting the Vlatter `on said structure for rotation about the axis of revolution of the drum, said members adapted to be disposed within said drum in spaced relationship to said axis; power-actuated means for rotating said drum; and iiuid delivery means carried lby said structure and exn tending into said drum 'through said opening therein for directing lluid against said members as said drum is rotated, said fluid delivery means including a plate, a tube having a iiuid delivery orifice therein mounted on said plate for reciprocation relative thereto along a path of travel parallel to said axis, and reciprocating means carried by said plate and coupled with the tube for reciprocating the latter relative to said plate, said reciprocating means being operably coupled with said drum and being actuatable responsive to the rotation of the drum. 12. The combination as set forth in claim 11, wherein said plate is provided vwith bushing structure thereon adjacent one end thereof, said drum being provided with a pin thereon extending into said bushing structure for stabilizing said plate as said drum is rotated.

13. in combination:

support structure; an enclosure having means therein presenting a nurnber of compartments each adapted for receiving a member to be treated; means mounting said enclosure on said support structure for rotation relative to the latter to thereby rotate the members in said compartments, the latter being spaced from the axis of rotation of the Venclosure; means coupled with said enclosure for rotatingl the same; j

a fluid delivery tube having 'a plurality `of spaced fluid discharge orifices along the length thereof and adapted to be operably coupled with a source of uid;

means mounting said tube on said enclosure for reciprocation longitudinally of said axis of rotation and within the region circurnscribed by the members as the latter rotate with said enclosure; and

means coupled with said tube for reciprocating :the latter :in response to the rotation of said. enclosure.

14. The combination as set forth in claim 13, wherein said ori-ticos are in longitudinal alignment, said tube being on one side of said axis and disposed to direct fluid toward a rotating member as the -latter moves from a posi- Y tion on said one side of the axis to a position substantlally perpendicular to the flow of uid from jsaid orices.

References Cited in the le of this patent VV UNITED STATES PATEIJTSV 

1. APPARATUS FOR DELIVERING FLUID TOWARD AND AGAINST A MEMBER REVOLVABLE ABOUT A CENTRAL AXIS SPACED THEREFROM, SAID APPARATUS COMPRISING: AN ELONGATED SUPPORT ADAPTED TO BE DISPOSED ADJACENT SAID CENTRAL AXIS AND WITHIN THE REGION CIRCUMSCRIBED BY SAID MEMBER; A TUBE ADAPTED TO BE OPERABLY COUPLED WITH A SOURCE OF FLUID UNDER PRESSURE AND HAVING A NUMBER OF SPACED ORIFICES THEREIN ALONG THE LENGTH THEREOF PROVIDING FLUID OUTLETS THEREFOR; AN ELEMENT CARRIED BY SAID SUPPORT FOR RECIPROCATING MOVEMENT ALONG THE LENGTH THEREOF AND SECURED TO SAID TUBE FOR MOUNTING THE LATTER ON SAID SUPPORT FOR RECIPROCATING MOVEMENT SUBSTANTIALLY LONGITUDINALLY OF SAID CENTRAL AXIS WHEREBY FLUID ISSUING FROM SAID ORIFICES WILL BE DIRECTED ACROSS THE PATH OF REVOLUTION OF SAID MEMBER AN AGAINST COEXTENSIVE PORTIONS OF THE MEMBER AS THE LATTER MOVES INTO ALIGNMENT WITH THE ORIFICES; AND MEANS COUPLED WITH SAID ELEMENT FOR RECIPROCATING THE LATTER THEREBY RECIPROCATE SAID TUBE. 